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integrate target features into building assembly code

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This brings us up to par from what stage1 does. There will still be an
open issue for completing this.
This commit is contained in:
Andrew Kelley 2020-09-14 23:03:13 -07:00
parent 1ad60c4386
commit 6e9396e32b
2 changed files with 15 additions and 5 deletions
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2
BRANCH_TODO
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@ -1,4 +1,3 @@
* integrate target features into building assembly code
* handle .d files from c objects
* glibc .so files
* support rpaths in ELF linker code
@ -46,3 +45,4 @@
* improve robustness of response file parsing
* there are a couple panic("TODO") in clang options parsing
* std.testing needs improvement to support exposing directory path for its tmp dir (look for "bogus")
* integrate target features into building assembly code

18
src-self-hosted/Compilation.zig
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@ -1241,10 +1241,20 @@ fn addCCArgs(
},
.so, .assembly, .ll, .bc, .unknown => {},
}
// TODO CLI args for cpu features when compiling assembly
//for (size_t i = 0; i < g->zig_target->llvm_cpu_features_asm_len; i += 1) {
// try argv.append(g->zig_target->llvm_cpu_features_asm_ptr[i]);
//}
// Argh, why doesn't the assembler accept the list of CPU features?!
// I don't see a way to do this other than hard coding everything.
switch (target.cpu.arch) {
.riscv32, .riscv64 => {
if (std.Target.riscv.featureSetHas(target.cpu.features, .relax)) {
try argv.append("-mrelax");
} else {
try argv.append("-mno-relax");
}
},
else => {
// TODO
},
}
if (target.os.tag == .freestanding) {
try argv.append("-ffreestanding");